Which vessel returns oxygenated blood from the lungs to the heart?

The vessel that returns oxygenated blood from the lungs to the heart is the pulmonary veins. The pulmonary veins are responsible for carrying oxygen-rich blood that has just been oxygenated in the lungs back to the heart, specifically entering the left atrium. This is a crucial step in the circulatory process, as it completes the oxygenation cycle before the blood is pumped out to the rest of the body through the left ventricle.

The right atrium is involved in receiving deoxygenated blood from the body, while the pulmonary arteries are responsible for carrying deoxygenated blood from the heart to the lungs for oxygenation. The coronary arteries supply blood to the heart muscle itself, rather than conducting oxygenated blood from the lungs. Thus, the pulmonary veins are central to the return of oxygenated blood to the heart after it has been oxygenated in the lungs.